For what it's worth, I doubt that people think it's the engineering teams that are the problem; it feels as though leadership just doesn't give a crap about it, because, after all, if you have a captive audience you can do whatever you want.

(See also: Windows, Internet Explorer, ActiveX, etc. for how that turned out)

It's great that you're working on improving the product, but the (maybe cynical) view that I've heard more than anything is that when faced with the choice of improving the core product that everyone wants and needs or adding functionality to the core product that no one wants or needs and which is actively making the product worse (e.g. PR slop), management is too focused on the latter.

What GitHub needs is a leader who is willing and able to say no to the forces enshittifying the product with crap like Copilot, but GitHub has become a subsidiary of Copilot instead and that doesn't bode well.